Identification of tyrosinase inhibitors from Marrubium velutinum and Marrubium cylleneum |
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Authors: | Karioti Anastasia Protopappa Anastasia Megoulas Nikolaos Skaltsa Helen |
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Institution: | Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, Panepistimiopolis-Zografou, Athens 15771, Greece. |
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Abstract: | Tyrosinase is a key enzyme in the production of melanins in plants and animals. Forty-five secondary metabolites isolated from Marrubium velutinum and Marrubium cylleneum belonging to the classes of flavonoids, phenylethanoid glycosides, phenolic acids and lignan glycosides were screened for their inhibitory activity against mushroom tyrosinase. Flavonoids and phenylethanoid glycosides showed moderate inhibitory activity, while phenolic acids were less active than phenylethanoid glycosides, suggesting that both phenolic groups are important for the activity. |
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